alt Hacker NewsThis isn't my field, but I see a huge gap between what in the abstract they say it would be feasible for us and what we're currently capable of. I mean, we're able to send space probes around, but self-replicating space probes and Dyson spheres feel on another level. Am I the only one?
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> what we're currently capable of.
What we're capable of != what we're doing / not doing because of political will. We are technically capable of reaching significant fractions of c with tech from the 1960s. We'll never do that because there's no will to do it, but the tech is there.
Same for self replicating stuff. We could build self-contained factories that build stuff from raw minerals, but we'll likely not do it until there's a will for it. Or need for it.
Do we have anything that self-replicates physically?
Software, sure. I know 3D printer folks will sometimes 3D print parts for new machines. But nothing that fully replicates itself, right? Especially autonomously.
Maybe we'll see what a moon base can bring us.
Life itself could arguably be a Von Neumann probe. It's so good at spreading that it's a problem, when we send probes to other bodies in our own solar system we often sanitize them because we worry life will hitch a ride and start colonizing.
Life on a planet is a lot like a continuous fire, fires often send out embers that start new fires elsewhere.
You send out little packets of life to new places, wait single-digit billions of years (a blink of an eye for the universe, really), boom: new intelligent species with potential to shoot more seeds out into the universe.